Abstract

Sporadic cases of infection of the central nervous system, presumably of viral origin, contribute much of the material received by a virus diagnostic laboratory. The present report is concerned with an analysis of material of this type submitted over a period of 11 years from military personnel, veterans and their dependents in the United States. Almost all of the 854 patients who provide the basis of this study presented clinical findings resembling the syndrome designated by Wallgren as acute aseptic meningitis.1 In only a few of the patients was the clinical picture indicative of deep-seated neurologic involvement compatible with the